// your work here
import java.awt.geom.Rectangle2D.Double;

public class AreaTester{
   public static void main(String[] args){
      // your work here
      Double rect = new Double(0,0,5.1,10);
      double area = rect.getWidth() * rect.getHeight();
      System.out.println(area);
      System.out.println("Expected: 51");
   }
}